HUNTSVILLE — Houston cop killer Jeffrey Williams went to his death in the state's death chamber Wednesday with a bitter denunciation of police, calling them "clowns" and accusing them of wantonly killing "innocent kids."

"When I kill one or pop one, ya'll want to kill me," he said. Minutes later, Williams, 37, lay dead on the chamber's steel gurney after authorities administered a massive dose of pentobarbital, a short-acting drug used to euthanize animals.

The lethal dose was administered at 6:10 p.m. Williams was declared dead at 6:36 p.m.

Later, Ray Hunt, president of the Houston Police Officers Union, responded with venom.

"The fact that to the end he continued to ridicule police officers shows what a thug he was," Hunt said outside the chamber. "I have no sympathy for him. I have sympathy for his family, but not for him."

Killed Houston officer

Williams was executed for the May 19, 1999, murder of Houston policeman Troy Blando, 39. Blando, working an undercover auto theft shift at a southwest side motel, was fatally shot as he attempted to handcuff Williams. Williams had driven into the motel's parking lot in a stolen Lexus.

The killer was arrested a short time later, handcuffs dangling from one wrist. Williams said he believed Blando was a robber, and that he shot the officer in self-defense.

Hunt, surrounded by officers who traveled to Huntsville for the execution, described Blanco as an exemplary officer and husband who "always had a smile on his face."

"It is tragic someone would end a life like this with a single shot," he said.

Williams' final statement, in which he accused police of "getting away with murder all the time," was delivered to a witness room filled with law enforcement and state officials. Neither family nor friends of Williams or of his victims were present.

'God has a plan'

"God has a plan for everything," Williams said. "You hear. I love everyone that loves me. I ain't got no love for anyone that don't love me."

The killer's attorney argued that lawyers who previously represented Williams had been ineffective. An appeals attorney, he charged, had "cut and pasted" his petition, then filed it three days after the deadline.

Virginia attorney Jonathan Sheldon argued that courts should revisit Williams' claim of ineffective counsel under a recent high court ruling that provides a vehicle for such reviews.

Sheldon contended that Williams' first attorney failed to call witnesses in the punishment phase who would have testified that the killer - although not mentally disabled - was unable to function in society.

Williams, the petition said, was unable to hold jobs or to perform such basic tasks as cooking food.

Williams was the sixth killer and the first Harris County killer executed in Texas this year.